Mechanical refrigeration



June 5, 1928. 1,672,831

C. C. SPREEN MECHANICAL REFRIGERATION Filed July 27, 1925 m 4/ zQ/ I m 7 /&

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A ttorneys Z'Patented June 5, 192a.

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FEtPREEN, @111 DETROIT, MIQJEEHGAEF, v MAJBATIQN, ill DEER/GIT, ITZTIfiHIGAN, A CORPORATION OF MICHIGAN.

ennui" OFFICE.

ASSIGNOR T ELECTRIC REFRIGERA- application riled duly 1926. Serial No. 125,188.

, sectional expansion units particularly applicable to thisnse. In the drawings accompanying this specification and formlng a part of this application I have shown, for

purposes of illustration, one form which my invention may assume. In these drawings:

Figure 1 is a side elevation of this illustrative form of my invention,

Figure 2 is an'end elevation of this il1ustrative embodiment of my invention, While Figure 3 is-a section on the line 33 of Figure 2.

The embodiment of my invention herein shown and described comprises a pair of end sections 12 and 121, the section 12 comprises an upper connecting portionl13 ar ranged to receive at either end either a nipple 14- connecting that upper connecting portion 13 with the upper connecting portion of an adjacent section, or a plug 15 closing that end of that upper connecting ortion 13, the section 121 comprises a simi ar upper connecting portion 131 arranged to receive at one end either a. nipple14 connecting that upper connecting portion 131 with the upper connecting portion of an adjacent section, or a plug 15 closing that end of the upper connecting portion 131, each of the sections 12 and 121 comprises a lower connecting portion 16 arranged to receive at either end either a nipple 17 connecting that lower connecting portion 16 with the lower connecting ortion 16 of an adjacentsection, or a p ug 18 closing that end ofthat lower connecting portion 16, the; section 12 comprises a central heat transferringpon tion 19 extending between and in communication with the upper and lower connecting portions 13 and 16 of that section, the sec tion 121 comprises a central heat transferring portion 191 extending between and in communication with the u per and lower connecting portions 131 an 16 of that section. and each of theportions 19 and'191 is provided on either face with a plurality of fins 20 serving to increase the transfer of heat into or from the heat transferring portion 19 or 191 and, in cooperation with invention relates to mechanical refrigof thesection 121, and in communication therewith, is a chamber 221 arranged to receive the control valve means for regulating the flow of liquid refrigerant into the expansion unit, this chamber 221 comprising a vertical cylindrical body 231 integral with the upper connecting portion 131 and heat transferring portion 191 of the section 121, prpvided near its'top with a refrigerant outlet 261, closed at the bottom by'an integral base wall 241 provided with a refrigerant inlet 271, and closed at the top by a removable top wall 251, the to wall 251 and bottom wall 241 serving togetlier to support for vertical reciprocation a float 301 carrying a valve 291 arranged to close the refrigerant inlet 271 when the float is raised by the presencewithin the chamber 221 of refrigerant to the desired level.

From the above description it will be apparent to those skilled in the art that I have provided a new and improvedsectional expansion unit particularly adapted for use with refrigerating apparatus of the compres sor-condenser-flooded-expander type. At the same time, it will also be obvious to those skilled in the art that the particular embodiment of my invention-herein shown and described may be variously changed and modified without departing from the spirit of my invention or sacrificin the advantages thereof, and it will accordingly be understood that the disclosure herein is illustrative only and that my invention is not limited thereto.

I claim: v

1. In a mechanical refrigerating apparatus of the compressor-condenser-flooded-expander type, an expansion unit comprising a pair of end refrigerating sections connected with their interiors in operative communication, a chamber for the reception'of control valve means at the side of and integral with tus of the compressor-condenser-flooded-exof and integral with said refrigerating secpander type, a sectional expansion unit comtion with its interior in operative communi prising a refrigerating section arranged to cation with the interior of said refrigerating 10 be connected with its interior in operative section.

5 communication with the interiors of other In testimony whereof I hereunto afiix my sections and comprisin a chamber for the signature. I reception of control va ve means at the side CHARLES C. SPREEN. 

